Does exists the friction force in space? If yes, tell an full example

Gamma rays are waves of energy that have no charge.

What is the mass of a car that weighs 140,000 N

People often think that Galileo dropped two objects of dramatically different mass off of the Leaning Tower of Pisa that both hit the ground at the same time. Explain why in reality this was most likely not true.

How did settlers changed the great plains?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis.

Following an inelastic collision, what can kinetic energy be converted into? Check all that apply. heat impulse momentum potential energy sound

Air has pressure because a. the stratosphere is thick b. air has mass c. wind moves the air d. temperature warms the air

Which of the following values represents an index of refraction of an actual material

What physical characteristic is the same for a particular substance regardless of the sample size.

In the hydrologic cycle, water evaporates into the atmosphere. It then condenses and falls to the ground as precipitation. How can the water return to the atmosphere?